While reading some documentation, I noticed that we have references to past releases. For example, http://www.postgresql.org/docs/9.2/static/xfunc-c.html mentions "A magic block is required as of PostgreSQL 8.2". Sure, this is true even as of 9.2 or even 9.3. There are a few more such references that I could spot with a simple grep in the doc/src/sgml directory. I wonder if this is worth fixing. I don't know sgml enough, but if it supports some sort of a meta-tag, then it might help to replace specific version references with something like <CURRENT_MAJOR_RELEASE> so that the current major version gets substituted when docs for that release are built.
The phrasing "as of 8.2" basically means "from 8.2 onwards". Changing the version there would make the text incorrect.
